Acid-proof receptacle and lining therefor



(No Mddel.)

E. R. RAND.

AOID PROOF REOEPTAOLE AND LINING THEREFOR. No. 394,296. Patented Dec. 11, 1888.

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UNITED STATES PATENT OFFICE.

EIHVIN R. RAND, OF NE\VTON, ASSIGNOR TO THE BOSTON CAR SPRING COMPANY, OF BOSTON, I\IASSA(HUSET'IS.

ACID-PROOF RECEPTACLE AND LINING THEREFOR.

SPECIFICATION forming part of Letters Patent No. 394,296, dated December 11, 1888.

Application filed April 19, 1887. Serial No. 235,324. (No model.)

i be of wood, and will preferably be treated to render them to a certain extent. acid-resisting, so that a short exposure to the action of acids would not injure or destroy them. The box or case when lined with soft rubber may be made much thinner and lighter than it safely could without such lining, and the lining would be of ad\ 'antage even with the usual acid-proof glass or bard-rubber receptacles, as a breakage which did not wholly destroy the receptacle would probably leave a sutiicient portion of it to sustain the lining until the 'new case could be provided, while without such lining the slightest breakage or crack in the case would permit the liquid to escape, and thus not only disable thebattery, but expose the surrounding objects to the injurious etfects ot' the acid.

Figure 1 is a sectional view of a lining or covering for a receptacle to hold acids embodying this invention, and liig. 2 a corres1')onding sectional view of: the rigid case or frame for said receptacle.

The case or frame a, Fig. 2, may be of any suitable or usual size, shape, and construction, being shown as provided with internal ledges or cleats, u, to support the inner members of the battery. \Vhile the invention is not limited to any specific construction or material for the main case a, it is believed that paper or wood pulp formed or molded and compressed by the well-known processes and treated to render it impervious to liquids, and preferably to a greater or less extent acidresisting, is the best for this purpose. In order to protect the said case from continuous action of the acid liquids to be contained within it, and to prevent leakage of such liquids if the said case should be partially broken or cracked, it is, in tlUOOTtlflllCQ with this invention, provided with a lining or covering, b, composed of rubber molded and vulcanized in proper shape to tit the interior of the said case a, being shown in this instance as having recesses l) to receive the cleats or ledges a at the bottom of the case.

In order to keep the lining b at all times extended, and to prevent possibility of any of the liquid enteriu between the said case and its covering, the upper portion of the latter is molded with an outwardly and downwardly To all whom it may concern:

Be it known that I, EDWIN R. RAND, of N ewton, county of Middlesex, State of Massachusetts, have invented an l'mproven'lent in Acid-Proof Receptacles and Linings therefor, of which the following description, in connection with the accompanying drawings, is a specification, like letterson the drawings representin like parts.

My invention relates to a receptacle capable of resisting the action of acid liquids, being especially intended to constitute the outer or main receptacle of a galvanic batteiy.

In another application I have shown and described an acid-proof receptacle composed of a metal box having a coverot'gutta-percha or rubber vulcanized upon it.

For some reasons it is desirable to have the lining removable; and the present invention consists partly in. a lining or covering for a rigid case or frame, said lining being composed of vulcanized rubber made into a bag or receptacle havi n its exterior size and shape correspond with the interior size and shape of the rigid receptacle, and having around its upper edge a down wardly-turned lip or flange, which extends down the outer surface of the rigid case, and thus supports the lining and keeps its upper part distended and prevents possibility of the liquid finding its way between the rigid case or frame and lining. This combination of rigid case and flexible lining has many advantages, which will be readily apparent. F01 example, a case might be broken, so that it alone could not hold the liquid, although it would still alford a sufficient support for the lining, so that the entire receptacle would be nearly if not quite as effective as before and would. answer until a new case could be provided; or if a lining should become broken or torn another could be quickly substituted; and if the batteries were used, for example, on railway-trains a few extra linings could be easily carried, as they would fold up and occupy but little space, and might in many cases prevent the entire battery from being disabled. The case or rigid frame-work that supports the rubber linin may be of any desired material, preferably of papier-mach or some of the other well-known forms of: molded pulp; or they may turned flange, 6 which fits over the upper edge of the receptacle a and extends a greater or less distance down the outer surface thereof,

as may be desired.

5 The bag or covering 1) may be folded into small space when not in use, and a new covering can be readily applied to a case when an old one has become damaged.

The covering 17 is sufficient in itself to contain the acid liquid, and the function of the case a is merely to keep the said covering 1) in the proper shape or position, which can readily be done by a skeleton case or frame, or by a case or frame such as shown, if it were cracked or had a hole knocked in the side or bottom of it, which would, without the lining, render it absolutely worthless and for the time being disable the battery of which it formed a part.

By having the case itself liquid-tight and to a greater or less degree acid-resisting the liability to accidents is greatly diminished, as the lining may be depended upon to hold the liquid when the case is damaged, as before stated; or the case may retain the liquid fit the upper edge and a portion of the exterior of the said case adjacent thereto, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDXVIN R. RAND.

\Vitnesses:

J 0s. P. LIvERMoRE, M. E. HILL. 

